I believe it means they were manufactured by Carl Zeiss in the early ’30s, and their magnification is 7×50. The rest of it most likely has to do with where it was made. They might be worth a couple hundred $. Google around and see what comes up.
D58 Said,
I believe the ARTL would represent artillery
The DF 7×50 DF God only knows 7 equals magnification the 50 represents Field of view.
Example an 8×50 is 8 times magnification the field of view at 1000 yards would be 340 feet of surface area you will see in the glasses.
Sorry I could not find any 7×50 for the example but with the 7 being a lower magnification
The surface area you will see in your glasses at 1000 yards will increase some a guess would be 20%
The glasses were used to observe practice or combat for the artillery crews.
The 1293 ost could be a catalog number for the military to track who has what.
Or it could represent a manufacture model number.
david m Said,
They were owned by Albert Speer. They are priceless.
bferg Said,
7×50, they are 7 power magnification and the objective end is 50 mm in diameter. That is standard measuring for any binocular or telescope.
Not sure of the other markings.
Comments
I believe it means they were manufactured by Carl Zeiss in the early ’30s, and their magnification is 7×50. The rest of it most likely has to do with where it was made. They might be worth a couple hundred $. Google around and see what comes up.
I believe the ARTL would represent artillery
The DF 7×50 DF God only knows 7 equals magnification the 50 represents Field of view.
Example an 8×50 is 8 times magnification the field of view at 1000 yards would be 340 feet of surface area you will see in the glasses.
Sorry I could not find any 7×50 for the example but with the 7 being a lower magnification
The surface area you will see in your glasses at 1000 yards will increase some a guess would be 20%
The glasses were used to observe practice or combat for the artillery crews.
The 1293 ost could be a catalog number for the military to track who has what.
Or it could represent a manufacture model number.
They were owned by Albert Speer. They are priceless.
7×50, they are 7 power magnification and the objective end is 50 mm in diameter. That is standard measuring for any binocular or telescope.
Not sure of the other markings.